package com.example.chapter04;

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@RestController
public class FileUploadController {
    SimpleDateFormat sdf =new SimpleDateFormat("yyyy/MM/dd/");
    @PostMapping("/upload")
    public String upload(MultipartFile uploadFile, HttpServletRequest rep){
        String realPath = rep.getSession().getServletContext().getRealPath("/uploadFile");
        String format = sdf.format(new Date());
        File folder = new File(realPath + format);
        if (!folder.isDirectory()){
            folder.mkdirs();
        }
        String oldName = uploadFile.getOriginalFilename();
        String newName = UUID.randomUUID().toString()+oldName.substring(oldName.lastIndexOf("."),oldName.length());
        try{
            uploadFile.transferTo(new File(folder,newName));
            String filePath = rep.getScheme() + "://" + rep.getServerName() + ":" + rep.getServerPort() + "/uploadFile/" + format +newName;
            return  filePath;
        } catch ( IOException e){
            e.printStackTrace();
        }
        return "上传失败！";
    }
}
